John Truby is an accomplished American screenwriter, film director, author, and screenwriting lecturer. Truby's influence in the film industry is notable, having served as a consultant on over a thousand film scripts over the past thirty years. His expertise in storytelling is recognized not only in the film community but also among writers and story developers.

He is the mind behind the screenwriting software program Blockbuster, originally known as Storyline Pro. This program has been instrumental in helping many screenwriters develop their stories. Truby's most acclaimed work is Anatomy of Story: 22 Steps to Becoming a Master Storyteller, a book that is highly regarded for its insight into screenwriting skills and storytelling techniques.